is_prime function

[Abhijit25Mishra]

• Make sure to add a .json file. have a look at the previous contribution in this repo to get a better understanding.
• Add a markdown file explaining what the snippets does and what all is recommend to be changed.
• Add any personal recommendation if you want to.
• Explain any uncommon topics and add any resources where they can read more about it.

[WaniAthar]

can you assign me the issue? @Abhijit25Mishra

[Abhijit25Mishra]

Yeah done. Be sure to maintain code quality. Use only the default CPP code to reduce any dependency.

[WaniAthar]

@Abhijit25Mishra please go through the snippet